AxelrodExamples

Strategy visualizations and example tournaments for the iterated Prisoner's Dilemma library Axelrod.

Strategy Visualizations

The first strategy visualization displays how often a strategy cooperates with every other strategy per round, averaged over many interactions (~200 repeated games between every pair of strategies).

Cooperation Rate Heatmaps

ZDGTFT2

Left: no noise | Right: 5% noise

Calculator

Left: no noise | Right: 5% noise

As you can see, the introduction of noise alters the efficacy of Calculator's cycle detection algorithm.

Average Score Heatmaps

We can also visualize the average payoff per round earned by each strategy versus every other strategy per round, averaged over many interactions (~200 repeated games between every pair of strategies).

Alternator

Left: no noise | Right: 5% noise

Evolved ANN 5 Noise 05

Mean Score Heatmap

Left: no noise | Right: 5% noise

All Strategies Heatmaps

Click to see all the renderings for each strategy.

Example Tournaments

See the python script example_tournaments.py for the exact details of each tournament.

All Fair Strategies

This tournament covers all strategies in the Axelrod library that follow the standard Axelrod rules.

Score Distributions

Left: no noise | Right: 5% noise

Win Distributions

Left: no noise | Right: 5% noise

Pairwise Payoffs

Left: no noise | Right: 5% noise

Tournaments

Click to see all the renderings for each tournament.

All Fair Strategies This tournament covers all strategies in the Axelrod library that follow the standard Axelrod rules.
Deterministic All deterministic strategies.
Stochastic All stochastic strategies.
Finite Memory The players in this tournament are all strategies that remember a finite number of rounds (i.e. do not retain history indefinitely).
Memory One The players in this tournament are all memoryone strategies (having memory depth 0 or 1).
Stewart & Plotkin 2012 This tournament covers the same strategies in Stewart and Plotkin's 2012 tournament
Tyler Singer-Clark This tournament's players are those used in Tyler Singer-Clark's paper Morality Metrics On Iterated Prisoner's Dilemma Players

License

Axelrod-Python/AxelrodExamples

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